Don’t be angry with us. We _____ with you together, but we were busy with our final reports when you called in.
| A．would eat out | B．could have eaten out | C．should eat out | D．must have eaten out |
______ no doubt that 100 years ago animal testing was cruel but today animals in experiments are very well taken care of.
| A．It is | B．There is | C．This is | D．That is |
I try to understand __________ that prevents so many Chinese from being as happy as one might expect.
| A．why is it | B．what is it | C．why it is | D．what it is |
It’s raining heavily . Little Mary felt cold , so she stood ______to her mother .
| A．close | B．closely | C．closed | D．closing |
China understands the situation and needs of underdeveloped countries on the issue of climate change and urges developed countries to support them______ technology and finance.
| A．in spite of | B．owing to | C．regardless of | D．in terms of |
______ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
| A．Now that | B．Ever since | C．So that | D．As long as |